BBC News | Approval granted for BP Alligin oil development in North Sea BBC News Energy giant BP has been granted approval for a North Sea development which it is hoped will produce 20 million barrels of oil. The Alligin field is part of the Greater Schiehallion area off the west of Shetland. Approval has been granted by the Oil ... OGA gives BP thumbs up for west of Shetland oil project |